How to reproduce:
1. Open project "NavMeshTest.zip"
2. Open the Navigation window (Window>AI>Navigation)
3. Choose the Bake tab and press the "Bake" button
4. Enter the Play Mode
5. In the Hierarchy window select "Agent"
6. In the Inspector window press the "Warp Agent to Dead Zone" button
7. Press the "Path Agent to point 1" or the "Path Agent to point 2" button
8. In the Hierarchy window disable "NavMeshObstacle2"
9. Press the "Path Agent to point 1" or the "Path Agent to point 2" button

Expected result: Agent can path with the Obstacles enabled
Actual result: Agent can't path and the warning appears

Reproducible with: 2020.3.20f1, 2021.1.25f1, 2021.2.0b16, 2022.1.0a12
Could not test with: 2019.4.31f1 (Error: Failed to load '/Users/adas.grinkevicius/Downloads/New Unity Project (77)/Assets/Scene/NavMesh.asset'. File may be corrupted or was serialized with a newer version of Unity.)